This adjustable 1 piece extension kit will allow for ZLINE Wall Mount Range Hood mounting on 9 ft. to 10 ft. ceilings. One 36 in. tall unvented chimney piece will replace one of the two standard 16 in. chimney pieces (supplied with your ZLINE Wall Mount Range Hood) to allow for mounting on 9 ft. to 10 ft. ceilings. Pieces adjust between 37 in. to 51 in. This stainless steel finish will match your range hood and add a sleek, elegant look to your home.